K&N High Performance Air Filter, Enough performance improvement to justify the cost? Options

[JawjaPorsche]

I was reading K&N's website about their air filters:

High flow air filters designed to improve engine performance
Designed to increase horsepower, torque, and acceleration

Has anyone put these on their stock FI Teeners and experience any of the above?

I am talking about the filters that go in our stock air filter boxes. Not external modification filters. I noticed Pelican Parts sells then as an option.

http://www.pelicanparts.com/cgi-bin/smart/...76%29%2C%20Each

[Luke M]

Years ago when I owned a 93 Mustang Cobra I replaced the factory air filter with a K&N unit. It sounds cool with all the intake noise but then I started to have an acceleration problem several months later. I looked at everything from ignition to fuel delivery. I did a search on the web on a mustang forum and found what may have caused my problem. I removed the mass air flow sensor and sure as heck the sensor was coated with oil. I got out some carb cleaner and sprayed the sensor clean and re installed. I drove the car and found the problem was fixed.. I later replaced the k&n with a Motorcraft filter and called it a day. I never had the same problem while I owned the car. The oil from the filter got sucked into the intake and all over the sensor causing my problem.

Like stated by others, save your money and buy a factory replacement filter.